Holobiont is a biomedia art installation developed in the London-based underground art space, the Dungeons of Polymorphous Pan. It transforms piles of rotten material that has accumulated in the space during the time of its occupation into heaps of living blob matter. The material hosts a diversity of microbial life forms and is fed by various body traces of human participants and performers who enter the space. The video of humanoid body parts is reflected on the surface of biological debris, animating the rot visually. The Holobiont video is a compilation of excerpts from a number of bioart installations that took place at the Dungeons of Polymorphous Pan between 2016-2019.